Explore topic-wise InterviewSolutions in Current Affairs.

i. Homo habilis was a forager. 

ii. This is because he ate the leftovers of animals that had been hunted by others.

He was called Homo habilis because besides their fossilized remains, some tools made by them were also found.

The species of humans who could use their hands effectively is known as ‘The skilled human

1. hand-axe 

2. tools 

3. Neanderthal 

4. brain

5. pebbles

1. The stone tools made by Homo habilis were not useful for hunting big animals. 

2. They had limited uses such as scraping meat from the skin of dead animals. 

3. They were also used for breaking bones to get the marrow.

The Cro-Magnon man used tools made of stone blades and fixed them in grooves and notches made of wood or bone handles.

Heredity is similarity in appearance and health characteristics of human beings to their ancestors.

The stone tools made by Homo habilis had limited uses such as scraping” meat from the skin of dead animals or breaking bones to get the marrows

1. When a member of the group died, the Neanderthals buried tools, horns etc. along with the dead body. 

2. They applied red ochre to the dead body before burying it. 

3. The Neanderthals thus established some rituals of burying the dead.

1. big 

2. leather 

3. meat 

4. roasted 

5. fire

1. Homo sapiens were the neighbours of the Neanderthals in Europe. Conflicts with the Homo sapiens took place; wherein the Neanderthals suffered.

2. The Neanderthals failed to adapt to environmental changes. As a result, the Neanderthals became extinct.

1. Homo sapiens had developed to a stage wherein they had fully developed larynx. 

2. Their jaws and muscles inside the mouth were fully developed. 

3. Their tongue was flexible. Therefore, human beings (Homo sapiens) could produce subtle and varied types of sounds.

1. land, animals 

2. settled 

3. appearance 

4. Homo sapiens sapiens 

5. Homo sapiens 

6. Homo habilis

The leaves of the lotus plants are broad to give support to the lotus flower to float on the water.

The leaves of the plants floating on the surface of water look-like broad, oily and fleshy.

The leaves of the plants in flowing water look like ribbons.

Jalkumbhi is completely submerged in water and the leaves are round and green in colour.

Homo erectus is said to have first made tools like a hand-axe.

1. The tools made by Homo sapien were sharper and more precise than the other species. 

2. He had a well-developed language system. 

3. He could draw pictures on the basis of observation as well as imagination. 

4. Hence, he was called as The Thinking Man’.

The aquatic plants do not decay in water due to their special physical characteristics.

1. language 

2. pictures 

3. developing 

4. Genetics

5. Neanderthal

1. grunts 

2. rituals 

3. Africa 

4. adopt 

5. Homo sapiens

If the aquatic plants are taken out of water, they will die.

1. Intellectual 

2. Neanderthal 

3. CroMagnon 

4. blades 

5. sounds, voice

The shape of the fish is like a boat.

Fish can swim in water with the help of tail or fins.

Due to the excessive presence of the jalkumbhi plants, sunrays cannot reach deep into the water and as a result other aquatic animals and plants face problems to exist.

Fish and tortoise.

No more water can be seen and other aquatic animals and plants will face problems.

Jalkunibhi and lotus.

(i) Homo is a Latin word which means man.

(ii) The Neanderthals primarily lived in caves.

Fish an aquatic animal

(a) Jalkumbhi

1. (algae) 

2. (jalkumbhi) 

3. (aquatic) 

4. (broad)

Its long hairs.

Algae is found in the places where water is accumulated

Lotus is  an aquatic plant.

Many types of plants grow in water, such as 

• Some of them remain completely submerged in water.
• Some plants are half submerged, but their leaves float on the surface of the water.
• Some of the plants also grow in flowing water.
• Some grow in stagnant water.

Dog, cow, buffalo etc. cannot respire in water. Hence, they keep their head out of water while swimming.

Given, x^y = y^x

Taking logarithm on both sides, we get

y log x = x log y

Differentiating both sides, w.r.t. x

y.(1/x) + log x(dy/dx) = x.(1/y).(dy/dx) + log y. 1

(y/x) + (log x).(dy/dx) = (x/y).(dy/dx) + log y

(dy/dx)[log x - (x/y)] = log y - (y/x)

(dy/dx)[(y log x - x)/y] = (x log y - y)/x

∴ dy/dx = y(x log y - y)/x(y log x - x)

The earth was transformed into the dead matter to facilitate the industrial revolution.

Globalization teaches us to move to an ecological paradigm.

Earth democracy has brought in a major shift from anthropocentrism to eco-centrism.

It is in the forest which is a unity in its diversity, that we get ecological sustainability and democracy.

Terra Nullius.

irresponsible, inhuman, impractical, unnatural, inactive, immaterial, uncivilized, imperfect. A suffix is a syllable or word added to the end of a root word to qualify its meaning or form a new word.

‘Terra Nullius’ means empty land, ready for occupation regardless of the presence of indigenous peoples

Vandana Shiva’s mother composed songs and poems about trees, forests and India’s forest civilizations.

Vandana Shiva highlights three important aspects of the Chipko movement. First, it was a non-violent response to the large-scale deforestation that was taking place in the Himalayan region. Secondly, it was the peasant women who had come out in defence of the forests. Thirdly, these women knew the real value of forests and were convinced of the effects of deforestation on their life.